Kevin Spacey says the cast of 'Horrible Bosses 2' spent most their time laughing on set.

The 54-year-old actor is working on the sequel to 2011's 'Horrible Bosses' and insists his co-stars Jason Bateman, Charlie Day and Jason Sudeikis had everyone in stitches of laughter while they were ''riffing'' and ''improv-ing''.

He told ''I think it is a little bit crazier. I'm very glad that almost everybody is back for it and I so love working with Jason and Jason and Charlie because being opposite them in a scene when they're riffing and they're improv-ing and they're trying different ways to do scenes, it is the hardest thing in the world not to absolutely lose your cookies. We spend most of our time laughing and any time somebody wants to pay me to come and laugh all day long, I'm there.''

He added: ''It's like that, those guys that just are innately funny, they just are. Anything they say, they just go off and they're so good at it. I love being around them, it's just great.''

'Horrible Bosses 2' is being directed by Sean Anders and is set for a November 2014 release.